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Determination of oil and water content in olive pomace using near infrared and Raman spectrometry. A comparative study

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Abstract

Near infrared (NIR) reflectance and Raman spectrometry were compared for determination of the oil and water content of olive pomace, a by-product in olive oil production. To enable comparison of the spectral techniques the same sample sets were used for calibration (1.74–3.93% oil, 48.3–67.0% water) and for validation (1.77–3.74% oil, 50.0–64.5% water). Several partial least squares (PLS) regression models were optimized by cross-validation with cancellation groups, including different spectral pretreatments for each technique. Best models were achieved with first-derivative spectra for both oil and water content. Prediction results for an independent validation set were similar for both techniques. The values of root mean square error of prediction (RMSEP) were 0.19 and 0.20–0.21 for oil content and 2.0 and 1.8 for water content, using Raman and NIR, respectively. The possibility of improving these results by combining the information of both techniques was also tested. The best models constructed using the appended spectra resulted in slightly better performance for oil content (RMSEP 0.17) but no improvement for water content.

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References

  1. Boskou D (1996) Olive oil: chemistry and technology. AOCS Press, Champaigne, IL, USA

    Google Scholar 

  2. Hassell DC, Bow EM (1998) Appl Spectrosc 52:18–29

    Article  Google Scholar 

  3. AENOR (1973) UNE 55032 Normas UNE, Asociación Española de Normalización y Certificación (AENOR)

  4. Laporte MF, Paquin P (1999) J Agric Food Chem 47:2600–2605

    Article  CAS  PubMed  Google Scholar 

  5. Tsenkova R, Atanassova S, Toyoda K, Ozaki Y, Itoh K, Fearn T (1999) J Dairy Sci 82:2344–2351

    CAS  PubMed  Google Scholar 

  6. Tøgersen G, Isaksson T, Nilsen BN, Bakker EA, Hildrum KI (1999) Meat Sci 51:97–102

    Article  Google Scholar 

  7. Hermida M, Gonzalez JM, Sánchez M, Rodriguez-Otero JL (2001) Int Dairy J 11:93–98

    Article  CAS  Google Scholar 

  8. Adamopoulos KG, Goula AM, Petropakis HJ (2001) J Food Compos Anal 14:431–440

    Article  CAS  Google Scholar 

  9. Archibald DD, Kays SE, Himmelsbach DS, Barton II FE (1998) Appl Spectrosc 52:22–31

    Article  CAS  Google Scholar 

  10. Barthus RC, Poppi RJ (2001) Vib Spectrosc 26:99–105

    Article  CAS  Google Scholar 

  11. Muik B, Lendl B, Molina-Díaz A, Ayora-Cañada MJ (2003) Appl Spectrosc 57:233–237

    Article  CAS  PubMed  Google Scholar 

  12. Muik B, Lendl B, Molina-Díaz A, Ayora-Cañada MJ (2003) Anal Chim Acta 487:211–220

    Article  CAS  Google Scholar 

  13. García Mesa JA, Hermoso Fernández M, Cáceres Alonso P (1996) Grasas y aceites 47:317–322

    Google Scholar 

  14. AENOR (1973) UNE 55031 Normas UNE, Asociación Española de Normalización y Certificación (AENOR)

  15. Hourant P, Baeten V, Morales MT, Meurens M, Aparicio R (2000) Appl Spectrosc 54:1168–1174

    Article  CAS  Google Scholar 

  16. Sadeghi-Jorabchi H, Hendra PJ, Wilson RH, Belton PS (1990) JAOCS 67:483–486

    CAS  Google Scholar 

Download references

Acknowledgements

The authors thank C.M. Europa S.A. laboratory for providing the samples and for reference analysis. This study was supported by the University of Jaén under project OB100213. B.M. thanks the Spanish Ministerio de Asuntos Exteriores for a PhD fellowship.

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Authors and Affiliations

  1. Department of Physical and Analytical Chemistry, University of Jaén, 23071, Jaén, Spain

    Barbara Muik, Antonio Molina-Díaz, Luis Pérez-Villarejo & María José Ayora-Cañada

  2. Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164, 1060, Vienna, Austria

    Barbara Muik & Bernhard Lendl

Authors
  1. Barbara Muik
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  2. Bernhard Lendl
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  3. Antonio Molina-Díaz
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  4. Luis Pérez-Villarejo
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  5. María José Ayora-Cañada
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Correspondence to María José Ayora-Cañada.

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Muik, B., Lendl, B., Molina-Díaz, A. et al. Determination of oil and water content in olive pomace using near infrared and Raman spectrometry. A comparative study. Anal Bioanal Chem 379, 35–41 (2004). https://doi.org/10.1007/s00216-004-2493-5

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  • DOI: https://doi.org/10.1007/s00216-004-2493-5

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